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Allisa [31]
3 years ago
10

The graphs of the equations y=2x-7 and y-kx=7 are parallel when k equals

Mathematics
1 answer:
Slav-nsk [51]3 years ago
7 0
y=2x-7 \ and \ y-kx=7 \\ \\ y=2x-7 \ and \ y=kx+7 \\ \\ two \ lines \ are \ parallel \ if \ their \ slopes \ are \ the \ same : \\ \\ k= 2


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PLEASE SOLVE QUICKLY I WILL MAKE YOU BRAINLIEST!!!
Solnce55 [7]

Answer:

x=25°, y=18°

Step-by-step explanation:

Solved! Here is the explanation. As we have supplementary angles, we have a total of 180° of angles. Angle BXD is a right angle, so 2x+40°=90°. 2x=50°, and then we have x=25°. Now, to figure out y, we have to look at angle BXA. In this case, 5y=90°. y=18°. So, x=25° and y=18°. Hope this explanation helps!

6 0
3 years ago
Neeedd helllp nowwwwwww!!!!! Please!!! Grad point <br> Find the measure of 1.
otez555 [7]

Maybe the answer is

<h3>60°</h3>

<h3>Explanation</h3>
  • The L between 2 and 3 shows that yeah... it has a neat degree (sorry dont know how to explain lol) and so the triangle which has 3 side and total 180° will be 180° : 3 = 60 because the degree is neat. :v

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8 0
2 years ago
2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2=
Tomtit [17]

Answer:

48

Step-by-step explanation:

i counted 24 2's and 24 x 2 is 48 also i did the math

3 0
2 years ago
Read 2 more answers
Karla makes paper airplanes. Today, it takes her 32 min to make 16 paper airplanes.
Pavel [41]

Answer:

48/b

Step-by-step explanation:

32÷16=2 so it takes two minutes per airplane. if she makes airplanes for 96 minutes at the same pace (2 min per airplane) then you need to divide 96 by 2 which gives you 48!

7 0
3 years ago
According to the University of Nevada Center for Logistics Management, 6% of all mer-
Fudgin [204]

Answer:

a) The point estimate of the proportion of items returned for the population of

sales transactions at the Houston store = 12/80 = 0.15

b) The 95% confidence interval for the proportion of returns at the Houston store = [0.0718 < p < 0.2282].

c) Yes.

We set an hypothesis and construct a test statistics. The test statistics result gives us:

Z calculated  = 2.2545, and this gives us the p-value = 0.0121. We assumed 95% confident interval. Hence, the level of significance (α) = 5%. Conclusively, since the p-value ==> 0.0121 is less than (α) = 5%, the test is significant. Hence, the proportion of returns at the Houston store is significantly different from the returns  for the nation as a whole.

Step-by-step explanation:

a) Point estimate of the proportion = number of returned items/ total items sold = 12/80 = 0.15.

b) By formula of confident interval:

CI(95%) = p ± Z*\sqrt{\frac{p*(1-p)}{n} }  =  0.15 \pm 1.96 *\sqrt{\frac{0.15*(1-0.15)}{80} },

CI(95%) = [0.0718 < p < 0.2282]

c) The hypothesis:

H_{0}: The proportion of returns at the Houston store is not significantly different from the returns  for the nation as a whole.

H_{a}: The proportion of returns at the Houston store is significantly different from the returns  for the nation as a whole.

The test statistics:

Z = \frac{\hat{p} - p_{0}}{\sqrt{\frac{p*(1-p)}{n} }}, where p_{0} is the proportion of nation returns.

Z calculated  = 2.2545, and this gives us the p-value = 0.0121. We assumed 95% confident interval. Hence, the level of significance (α) = 5%. Conclusively, since the p-value ==> 0.0121 is less than (α) = 5%, the test is significant. Hence, the proportion of returns at the Houston store is significantly different from the returns  for the nation as a whole.

6 0
3 years ago
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